2. With reference to the ladder logic of the CLx di verter gate program (Figure

Question

2. With reference to the ladder logic of the CLx di verter gate program (Figure 15-53), assume the solenoid gate fails to energize as programmed. You suspect the problem is due to an open in the solenoid coil or wiring to it. How might observation of the so- lenoid output status light help confirm this? 3. You are required to extend the Green light-on time of the CLX traffic control program (Figure 15-55) to 40 seconds. What changes would have to be made to the program? 4. With reference to the CLX heating oven process pro- gram (Figure 15-59), assume the oven-on pilot light burns out. In what way would the operation of the program be affected?

Explanation / Answer

To extend the green light on time of the program , you only need to change the preset value of the green light timer from 25000 to 40000 (i.e. from 25second to 40 second).

It means that the green light timer DN bit (NC) used in second last rung will become NO after 40seconds and turn off the green light.

IF THIS HELPED PLEASE PROVIDE A GOOD RATING. THANKS

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.